Personally I like all of the characters. Barry I thought was interesting with the fact that he was a police criminal scientist and then with the flash of lighting got his powers, and it was kind of neat seeing him develop. The beginning part of his Pre-Crisis run was a little slow but it got better once longer arcs started happening. And DC did a great job with Wally starting him as a sidekick with Barry as Kid Flash and later moving on with the TT and becoming a Flash. I'm excited about the new mini coming up. I personally don't think introducing Wally made Barry less interesting. I think they complimented each other. And Bart was a nice introduction as it extended Barry's family as well as New 52 Wallace. always good to have a Kid Flash. So basically, I like all the characters and don't have one preference over the other and they all add something to the Flash mythos. Also I think Barry and Wally's origin was better than Jay's berthing gas fumes.